DevOpsDays AZ 2020

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kloia

Scaling with Microservices

Technology

Microservices is not just smaller services

Ref: https://www.xenonstack.com/insights/service-oriented-architecture-vs-microservices/

Ref: https://www.browserlondon.com/blog/2019/07/01/do-you-need-microservices/

Splitting the Monolith
with Strangler-Fig Pattern

Ref: https://medium.com/@ddarie/the-strangler-fig-migration-pattern-2e20a7350511

Ref: https://www.michielrook.nl/2016/11/strangler-pattern-practice/
/serviceA

“Global mobile users to exceed 5.5B by 2022”
-- Forrester

Conway’s Law:
“Any organization that designs a system will inevitably
produce a design whose structure is a copy of the
organization's communication structure”

Is your architecture
ready to be
decoupled?

Is your
organisation
ready to be
decoupled?

Is your business
convinced to
invest on that
non-functional
change?

Are Microservices the ultimate
solution to scaling?

Consistency
Stock = 1
Stock = 1
Replication
Checkout
Product Page

Inconsistency
Stock = 0
Stock = 1
Replication
Checkout
Product Page

Inconsistency
Stock = 0
Stock = 1
Broken link!
Checkout
Product Page

Choose Availability or Consistency?
A or C?
Availability Consistency
Continue with
Inconsistency
Return Error to User

“Availability over consistency is not a
technical choice, it is a business choice.”
-- Anonymous

Ask your business?
Which one they prefer?
1- The website goes down
2- Website shows products with Stock=0

Eventual Consistency examples?
Twitter likes/timelines
Facebook news
Amazon Cart/Payment

Prior to moving to Microservices
● Consider your organizational structure
● Know your domain-model (i.e. Apply Event Storming)
● Go over the consistency requirements with business
● Increase the maturity of software teams
● Adapt a DevOps Culture

Thank you!
Derya SEZEN a.k.a Dorian
Consultant @kloia
@derya_sezen

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DevOpsDays AZ 2020

1. Baku DevOpsDays AZ’2020 Scaling with Microservices Derya SEZEN a.k.a Dorian Consultant @kloia (CNCF Member) DevOpsDays Istanbul Organizer @derya_sezen

3. Microservices is not Docker/Kubernetes

4. Microservices is not just smaller services

5. Ref: https://www.xenonstack.com/insights/service-oriented-architecture-vs-microservices/

6. Ref: https://www.browserlondon.com/blog/2019/07/01/do-you-need-microservices/

7. Microservices is a new data model

8. What if you have a Monolith?

9. Splitting the Monolith with Strangler-Fig Pattern

10. What is Strangler-Fig?

11. Ref: https://medium.com/@ddarie/the-strangler-fig-migration-pattern-2e20a7350511

12. Ref: https://www.michielrook.nl/2016/11/strangler-pattern-practice/ /serviceA

13. Problem?

14. Why we need scaling?

15. Is your business/data/load is growing?

16. “Global mobile users to exceed 5.5B by 2022” -- Forrester

17. Bottlenecks?

18. Solution?

19. How you will scale?

20. How you will scale?

21. How you will scale?

22. Scale Cube

23. Why not invest on Scale Cube?

24.

25. Bottlenecks?

26. Conway’s Law: “Any organization that designs a system will inevitably produce a design whose structure is a copy of the organization's communication structure”

27. Is your architecture ready to be decoupled?

28. Is your organisation ready to be decoupled?

29. Is your business convinced to invest on that non-functional change?

30. Are Microservices the ultimate solution to scaling?

31. Depends...

32. Microservices is not an architecture!

33. Consistency Stock = 1 Stock = 1 Replication Checkout Product Page

34. Inconsistency Stock = 0 Stock = 1 Replication Checkout Product Page

35. Inconsistency Stock = 0 Stock = 1 Broken link! Checkout Product Page

36. Choose Availability or Consistency? A or C? Availability Consistency Continue with Inconsistency Return Error to User

37. “Availability over consistency is not a technical choice, it is a business choice.” -- Anonymous

38. Ask your business? Which one they prefer? 1- The website goes down 2- Website shows products with Stock=0

39. Eventual Consistency examples? Twitter likes/timelines Facebook news Amazon Cart/Payment

40. Benefits of Microservices

41. Prior to moving to Microservices ● Consider your organizational structure ● Know your domain-model (i.e. Apply Event Storming) ● Go over the consistency requirements with business ● Increase the maturity of software teams ● Adapt a DevOps Culture

42. Thank you! Derya SEZEN a.k.a Dorian Consultant @kloia @derya_sezen

Editor's Notes

Servislerin DB uzerinden haberlestigi yapilara Monolith diyoruz
Servislerin DB uzerinden haberlestigi yapilara Monolith diyoruz
Incrementally migrate a legacy system by gradually replacing specific pieces of functionality with new applications and services. As features from the legacy system are replaced, the new system eventually replaces all of the old system's features, strangling the old system and allowing you to decommission it.

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